As a nutritionist (in the Spartacus sense) I wholeheartedly recommend you buy ''Bad Science'', read it, and lend it to everyone you know with even half a brain. Even one little dose of it will change your life for the better.
If you loved ''Bad Science'', [[The Tiger that Isn't by Michael Blastland and Andrew Dilnot|The Tiger That Isn't]] by [[:Category:Michael Blastland and Andrew Dilnot|Michael Blastland and Andrew Dilnot]] and [[How to Read a Novel by John Sutherland|How to Read a Novel]] by [[:Category:John Sutherland|John Sutherland]] do the same for maths and reading as ''Bad Science'' does for science. Although it's not been reviewed by Bookbag, ''The Road to Wellville'' by T Coraghessan Boyle is a highly-recommended and hilarious look at early 20th century quackery. You might also be interested in [[2012: Science or Superstition by Alexandra Bruce]].
Addendum: An additional chapter has been added to the paperback version. It can be read in full at [http://www.badscience.net/2009/04/matthias-rath-steal-this-chapter/ Badscience.net].